Perl Consulting

Zwiegnet offers deep Perl expertise for organizations relying on Perl for system administration, web applications, data processing, or legacy business logic. We work with both classic Perl 5 and modern practices, helping you maintain, extend, and modernize Perl codebases efficiently.

Our Perl services include:

• Script Development & Automation – Custom Perl scripts for system administration, log processing, data transformation, and cron-based tasks.
• Legacy Code Maintenance – Debugging, refactoring, and enhancement of existing Perl applications and CGI scripts.
• Modernization & Refactoring – Migration to modern Perl (Moose/Moo, Perl Critic, best practices), object-oriented design, and test coverage.
• Web Application Support – CGI, mod_perl, PSGI/Plack, Dancer2, Catalyst frameworks, and integration with Apache/NGINX.
• CPAN & Module Expertise – Selection, installation, and custom development of Perl modules for databases, networking, XML/JSON, and more.
• Performance Tuning – Profiling (Devel::NYTProf), optimization of regular expressions, memory usage, and algorithm efficiency.
• Database Integration – DBI/DBD for Oracle, PostgreSQL, MySQL, and complex query/report generation.
• Security Review & Hardening – Taint mode, input validation, secure coding practices, and vulnerability remediation.
• Migration Assistance – Porting Perl applications to newer servers, upgrading Perl versions, or gradual rewrite to Python/Go when needed.
• Troubleshooting & Break-Fix – Rapid diagnosis of runtime errors, module conflicts, encoding issues, and deployment problems.

Perl remains a powerful, battle-tested language for glue code, text processing, and rapid development — we help you leverage it effectively while planning for long-term maintainability.

Located between Madison and Milwaukee, Wisconsin since 2009 — direct access to seasoned Perl developers with decades of Unix/Linux experience.